Hi Dino
If I comment out 2 methods, the file parses fine. Uncommenting either is
enough to cause it to fail.
def convert(self, mode=None, data=None, dither=None, palette=WEB,
colors=256):
def rotate(self, angle, resample=NEAREST, expand=0):
WEB and NEAREST are both set to 0 at module level; convert and rotate
are both methods on the module-level old-style class Image. The only
obvious common feature is that both have a non-name default parameter
following a name default parameter, but I haven't managed to produce a
minimal repro.
If you're allowed to just look at other people's code willy-nilly, the
file is Image.py in PIL 1.16 :).
Cheers
william
Dino Viehland wrote:
Is there a parameter with a default value that is a name? If so what is the
scope of the name in relation to the function definition?
-----Original Message-----
From: users-boun...@lists.ironpython.com [mailto:users-
boun...@lists.ironpython.com] On Behalf Of William Reade
Sent: Thursday, October 22, 2009 6:37 AM
To: Discussion of IronPython
Subject: [IronPython] SystemError while compiling PIL.Image
Transcript follows. The contents of the file don't look obviously
weird.
Does anyone have any idea what the problem might be?
Cheers
William
-----------------------------------------------------------------------
--
C:\dev\ironclad>ipy -X:ExceptionDetail
C:\Python26\Lib\site-packages\PIL\Image.py
Object reference not set to an instance of an object.
at IronPython.Compiler.Ast.GlobalAllocator.GetVariable(AstGenerator
ag, PythonVariable variable)
at IronPython.Compiler.Ast.NameExpression.Transform(AstGenerator
ag,
Type type)
at
IronPython.Compiler.Ast.FunctionDefinition.TransformParameters(AstGener
ator
outer, AstGenerator inner, List`1 defaults, List`1 names, Boolean
needsWrapperMethod, List`1 init)
at
IronPython.Compiler.Ast.FunctionDefinition.TransformToFunctionExpressio
n(AstGenerator
ag)
at
IronPython.Compiler.Ast.FunctionDefinition.Transform(AstGenerator ag)
at
IronPython.Compiler.Ast.AstGenerator.TransformWithLineNumberUpdate(Stat
ement
fromStmt)
at
IronPython.Compiler.Ast.AstGenerator.TransformMaybeSingleLineSuite(Stat
ement
body, SourceLocation prevStart)
at IronPython.Compiler.Ast.AstGenerator.Transform(Statement[] from)
at IronPython.Compiler.Ast.SuiteStatement.Transform(AstGenerator
ag)
at
IronPython.Compiler.Ast.AstGenerator.TransformWithLineNumberUpdate(Stat
ement
fromStmt)
at
IronPython.Compiler.Ast.AstGenerator.TransformMaybeSingleLineSuite(Stat
ement
body, SourceLocation prevStart)
at IronPython.Compiler.Ast.IfStatement.Transform(AstGenerator ag)
at
IronPython.Compiler.Ast.AstGenerator.TransformWithLineNumberUpdate(Stat
ement
fromStmt)
at
IronPython.Compiler.Ast.FunctionDefinition.TryTransformBody(AstGenerato
r
ag, List`1 statements)
at
IronPython.Compiler.Ast.FunctionDefinition.TransformToFunctionExpressio
n(AstGenerator
ag)
at
IronPython.Compiler.Ast.FunctionDefinition.Transform(AstGenerator ag)
at
IronPython.Compiler.Ast.AstGenerator.TransformWithLineNumberUpdate(Stat
ement
fromStmt)
at
IronPython.Compiler.Ast.AstGenerator.TransformMaybeSingleLineSuite(Stat
ement
body, SourceLocation prevStart)
at IronPython.Compiler.Ast.AstGenerator.Transform(Statement[] from)
at IronPython.Compiler.Ast.SuiteStatement.Transform(AstGenerator
ag)
at
IronPython.Compiler.Ast.AstGenerator.TransformWithLineNumberUpdate(Stat
ement
fromStmt)
at IronPython.Compiler.Ast.ClassDefinition.Transform(AstGenerator
ag)
at
IronPython.Compiler.Ast.AstGenerator.TransformWithLineNumberUpdate(Stat
ement
fromStmt)
at
IronPython.Compiler.Ast.AstGenerator.TransformMaybeSingleLineSuite(Stat
ement
body, SourceLocation prevStart)
at IronPython.Compiler.Ast.AstGenerator.Transform(Statement[] from)
at IronPython.Compiler.Ast.SuiteStatement.Transform(AstGenerator
ag)
at
IronPython.Compiler.Ast.AstGenerator.TransformWithLineNumberUpdate(Stat
ement
fromStmt)
at IronPython.Compiler.Ast.PythonAst.Transform(AstGenerator ag)
at IronPython.Compiler.Ast.PythonAst.TransformToAst(CompilationMode
mode, CompilerContext context)
at IronPython.Runtime.PythonContext.CompilePythonCode(Nullable`1
compilationMode, SourceUnit sourceUnit, CompilerOptions options,
ErrorSink errorSink)
at IronPython.Runtime.PythonContext.GetScriptCode(SourceUnit
sourceCode, String moduleName, ModuleOptions options, Nullable`1 mode)
at IronPython.Runtime.PythonContext.GetScriptCode(SourceUnit
sourceCode, String moduleName, ModuleOptions options)
at IronPython.Runtime.PythonContext.CompileModule(String fileName,
String moduleName, SourceUnit sourceCode, ModuleOptions options,
ScriptCode& scriptCode)
at IronPython.Hosting.PythonCommandLine.RunFileWorker(String
fileName)
at IronPython.Hosting.PythonCommandLine.RunFile(String fileName)
SystemError: Object reference not set to an instance of an object.
-----------------------------------------------------------------------
--
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